<template>
  <div class="login_container">
    <div class="login_box">
      <!--    头像区域-->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!--    表单区域-->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!--prop 引入校验-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //储存用户名密码对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        // 校验用户名
        username: [
          //trigger 失去焦点触发
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '长度在 3 到 16 个字符', trigger: 'blur'}
        ],
        // 校验密码
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur'}
        ]
      }
    }
  },
  methods: {
    login() {
      //登录
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const {data: res} = await this.$http.post('login', this.loginForm)
        // console.log(res)
        if (res.meta.status !== 200) {
          console.log(res)
          this.$message.error('登录失败，请重新登录！')
        } else {
          this.$message.success('欢迎回来！')
        }
        //将登录成功后的token保存到session Storage中
        window.sessionStorage.setItem('token', res.data.token)
        //登陆成功 页面跳转
        this.$router.push('/home');
      })
    },
    resetLoginForm() {
      //重置表单
      this.$refs.loginFormRef.resetFields()
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 10px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 120px;
    width: 120px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 15px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  //设置为盒模型
  box-sizing: border-box;
}

.btns {
  display: flex;
  //具有对齐
  justify-content: flex-end;
}
</style>
